Journal of Geotechnical and Geoenvironmental Engineering最新文献

Experimental Program for the Determination of the Saturation Threshold for Brittle Behavior in Loose Sandy Silt Gold Tailings 确定松散砂质粉砂金尾矿脆性特性饱和阈值的试验方案

2区工程技术

Journal of Geotechnical and Geoenvironmental Engineering Pub Date : 2025-11-21 DOI: 10.1061/jggefk.gteng-13049

Felipe Urbina Espinosa, David Reid, Andy Fourie

{"title":"Experimental Program for the Determination of the Saturation Threshold for Brittle Behavior in Loose Sandy Silt Gold Tailings","authors":"Felipe Urbina Espinosa, David Reid, Andy Fourie","doi":"10.1061/jggefk.gteng-13049","DOIUrl":"https://doi.org/10.1061/jggefk.gteng-13049","url":null,"abstract":"Tailings storage facilities (TSFs) worldwide have recently experienced a number of failures, with insufficient undrained shear strength identified as a contributing factor in certain instances. The undrained shear strength of tailings is commonly assessed through element testing, such as the triaxial test, typically performed on loose samples under complete saturation. However, a substantial portion of tailings facility deposits often exist in partially saturated conditions. Despite the recognized increase in tailings strength with decreasing saturation levels, the threshold for the potential occurrence of excess pore pressure generation and strain-softening failure remains unclear. This study introduces a triaxial testing program designed to assess variations in undrained (closed system) shear strength for loose samples of low-plasticity gold tailings, prepared at different degrees of saturation using distinct saturation methods to address their impact. The findings reveal that as saturation decreases from complete saturation to partial saturation, both peak and remoulded strength increase, accompanied by a reduction in brittleness. Furthermore, the saturation history of the sample is observed to influence the brittleness of tailings under unsaturated behavior. A methodology to determine unsaturated brittle areas in a TSF is discussed.","PeriodicalId":54819,"journal":{"name":"Journal of Geotechnical and Geoenvironmental Engineering","volume":"152 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147920765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stress Ratio–Controlled Hardening Rule in the NorSand Framework NorSand框架中应力比控制硬化规律

2区工程技术

Journal of Geotechnical and Geoenvironmental Engineering Pub Date : 2025-09-25 DOI: 10.1061/jggefk.gteng-12925

Seyyed Kazem Razavi, Samuel Yniesta

{"title":"Stress Ratio–Controlled Hardening Rule in the NorSand Framework","authors":"Seyyed Kazem Razavi, Samuel Yniesta","doi":"10.1061/jggefk.gteng-12925","DOIUrl":"https://doi.org/10.1061/jggefk.gteng-12925","url":null,"abstract":"The NorSand model is a Cambridge-type soil model based on critical state theory, designed to simulate the monotonic behavior of sand. Cambridge-type models use an associated flow rule, with their yield surface obtained by integrating the stress-dilatancy relationship. The size of the yield surface is controlled by the amount of mean effective stress. In the case of NorSand, its hardening rule links the variation in this mean stress to incremental plastic deviatoric strain. However, the current model’s hardening rule, referred to as NorSand-OHR, provides accurate simulation results only for drained conditions, failing to capture undrained behavior, particularly for loose samples. In contrast, bounding surface models with stress ratio–based hardening rules effectively simulate sand behavior under both drained and undrained loading conditions. To address this limitation, this paper incorporates a stress ratio–based concept into NorSand’s framework, improving control over evolution of the yield surface and resolving the issues with NorSand-OHR. The modified hardening rule, called NorSand-ηHR, calibrates its hardening parameter to capture flow liquefaction in loose samples under undrained loading. NorSand-ηHR does not introduce additional properties; instead, it adopts hardening properties compatible with it. This new hardening rule was introduced in a recently modified version of the NorSand model with a nonlinear state-dilatancy law. The model’s validity is confirmed by comparing its simulation results with both drained and undrained test data from the Toyoura sand database.","PeriodicalId":54819,"journal":{"name":"Journal of Geotechnical and Geoenvironmental Engineering","volume":"151 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147908944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hysteresis at Low Relative Humidity on Vapor Sorption Isotherm of Na-Montmorillonite 低相对湿度条件下钠蒙脱土水蒸气吸附等温线的滞后特性

2区工程技术

Journal of Geotechnical and Geoenvironmental Engineering Pub Date : 2025-08-30 DOI: 10.1061/jggefk.gteng-13726

Yijie Wang, Liming Hu, Zhen‐Yu Yin, Pierre‐Yves Hicher, Yandi Wu

{"title":"Hysteresis at Low Relative Humidity on Vapor Sorption Isotherm of Na-Montmorillonite","authors":"Yijie Wang, Liming Hu, Zhen‐Yu Yin, Pierre‐Yves Hicher, Yandi Wu","doi":"10.1061/jggefk.gteng-13726","DOIUrl":"https://doi.org/10.1061/jggefk.gteng-13726","url":null,"abstract":"The vapor sorption isotherm (VSI) can be employed not only for characterizing the soil properties but also for describing the seepage and deformation phenomena within soils. The adsorption and desorption VSIs of expansive soil exhibit a distinctive hysteresis at low relative humidity (RH). While it is speculated that this hysteresis may be related to the interlayer hydration of expansive minerals, the underlying mechanisms remain poorly understood. In this study, we proposed a procedure that integrates experiments and molecular simulations to analyze this hysteresis. Through this procedure, we successfully reproduced the hysteresis and accurately captured the swelling and shrinkage of Na-montmorillonite (Na-Mt) in molecular simulations. The simulated hysteresis showed good agreement with experimental results. Through the analysis of microphysical states of hydrated montmorillonite, we revealed that this hysteresis mainly arises from the varying hydration states of interlayer cations during adsorption and desorption processes, and cations and hydrogen bonds are key to the stability of additional water molecules in desorption. Based on these findings, we proposed that the hysteresis amount at the 0.3 RH of a soil predominantly composed of Na-Mt is expected to exhibit a linear correlation with its internal specific surface area. This correlation was validated through experimental and numerical data. This study not only reveals the micromechanisms of VSI hysteresis at low RH and provides a potential direction for the utilization of this hysteresis, but also offers a reference for combining molecular simulations with experiments to investigate the water retention of expansive soils.","PeriodicalId":54819,"journal":{"name":"Journal of Geotechnical and Geoenvironmental Engineering","volume":"151 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147914488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Tailings Dam Performance Monitoring by Combining Coda Wave Interferometry with Distributed Acoustic Sensing 尾波干涉与分布式声传感相结合的尾矿坝性能监测

2区工程技术

Journal of Geotechnical and Geoenvironmental Engineering Pub Date : 2025-03-22 DOI: 10.1061/jggefk.gteng-13066

Susanne Ouellet, Jan Dettmer, T. Dylan Mikesell, Matthew Lato, Martin Karrenbach

{"title":"Tailings Dam Performance Monitoring by Combining Coda Wave Interferometry with Distributed Acoustic Sensing","authors":"Susanne Ouellet, Jan Dettmer, T. Dylan Mikesell, Matthew Lato, Martin Karrenbach","doi":"10.1061/jggefk.gteng-13066","DOIUrl":"https://doi.org/10.1061/jggefk.gteng-13066","url":null,"abstract":"Advances in distributed fiber optic sensing technologies are enabling new methods to monitor changes in tailings dam performance. Distributed acoustic sensing (DAS), a distributed fiber optic sensing technology relying on Rayleigh light backscattering, can provide continuous spatial and temporal coverage along the length of a fiber optic cable extending tens of kilometers. In 2019, nearly six kilometers of fiber optic cable were installed at ∼1 m depth along an active upstream tailings dam in northern Canada. DAS seismic data were acquired at 400 Hz over a four-month period, from April to August 2021. We applied coda wave interferometry to a 120 m cable segment to obtain relative changes in seismic velocities (dv/v). Such coda waves are typically dominated by Rayleigh surface waves and dv/v can be used as a proxy for shear wave velocity changes. The dv/v estimates decrease by up to ∼1.9% over an initial two-month period of spring thaw and rainfall. Subsequently, dv/v recover by ∼1%, and generally show an inverse correlation with tailings pond levels up until the end of data acquisition. This correlation is supported by a known power-law relationship between shear wave velocity and effective stress. Rayleigh surface wave sensitivity kernels incorporating nearby seismic cone penetration testing data are used to estimate the approximate depths of dv/v sensitivity at ∼10 m. Despite active construction causing noise contamination, we obtain stable cross-correlation waveforms with as little as one hour of data per day. Overall, our results demonstrate how DAS can be used to augment geotechnical monitoring networks by providing in situ estimates of dv/v to inform changes in tailings dam performance over time.","PeriodicalId":54819,"journal":{"name":"Journal of Geotechnical and Geoenvironmental Engineering","volume":"151 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147892185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Smart Ground Anchor with Inherent Capability to Detect Load Changes 具有探测载荷变化能力的智能地锚

2区工程技术

Journal of Geotechnical and Geoenvironmental Engineering Pub Date : 2025-02-28 DOI: 10.1061/jggefk.gteng-13613

Shih‐Hao Cheng, Hung Jiun Liao, Jim J. Lin

引用次数: 0

Uncertainty in Drained Fully Softened and Residual Strength Correlations 排水全软化与残余强度相关性的不确定性

IF 3.9 2区工程技术

Journal of Geotechnical and Geoenvironmental Engineering Pub Date : 2024-01-01 DOI: 10.1061/jggefk.gteng-11840

A. Idries, T. D. Stark

引用次数: 0

Three-Dimensional Analyses of Long-Term Settlement of Storage Tanks Supported by a Large Piled-Raft Foundation System 大型桩筏基础系统支撑储罐长期沉降的三维分析

IF 3.9 2区工程技术

Journal of Geotechnical and Geoenvironmental Engineering Pub Date : 2024-01-01 DOI: 10.1061/jggefk.gteng-11206

Haohua Chen, Jianmin Hu, Lianyang Zhang

引用次数: 0

Monitoring and Characterizing the Whole Process of Microbially Induced Calcium Carbonate Precipitation Using Electrical Resistivity Tomography 利用电阻率断层扫描监测和描述微生物诱导碳酸钙沉淀的全过程

IF 3.9 2区工程技术

Journal of Geotechnical and Geoenvironmental Engineering Pub Date : 2024-01-01 DOI: 10.1061/jggefk.gteng-11782

Jun-Zheng Zhang, C. Tang, C. Lv, Qi-You Zhou, Bin Shi

引用次数: 0

Predicting Wall Deflections for Deep Excavations with Servo Struts in Soft Clay 预测软粘土中使用伺服支柱进行深层挖掘时的墙体偏移

IF 3.9 2区工程技术

Journal of Geotechnical and Geoenvironmental Engineering Pub Date : 2024-01-01 DOI: 10.1061/jggefk.gteng-11347

Ming‐Guang Li, Qi-Zhang Xiao, Nian-Wu Liu, Jin-Jian Chen

引用次数: 0

Thermal Conductivity Function for Fine-Grained Unsaturated Soils Linked with Water Retention by Capillarity and Adsorption 细粒非饱和土壤的导热函数与毛细管和吸附的保水性有关

IF 3.9 2区工程技术

Journal of Geotechnical and Geoenvironmental Engineering Pub Date : 2024-01-01 DOI: 10.1061/jggefk.gteng-11669

Yu Lu, J. S. McCartney

引用次数: 0